/* 夜间模式下背景宇宙星光 */
#universe {  
    display: block;
    position: fixed;
    margin: 0;
    padding: 0;
    border: 0;
    outline: 0;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 1;
}
/* 亮色模式下隐藏 */
[data-theme='light'] #universe {
    display: none;
}